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Dissertations / Theses on the topic 'Organic isocyanates'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Li, Jie. "Design and synthesis of organic chiroptical switches." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/27385.

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2

Dahlin, Jakob. "Aerosols of Isocyanates, Amines and Anhydrides : Sampling and Analysis." Doctoral thesis, Stockholm : Department of Analytical Chemistry, Stockholm university, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-6786.

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3

Karahan, Emrah. "Synthesis Of Furopyrrolone And Furopyridazinone Derivatives: A New Class Of Compounds." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12612937/index.pdf.

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ABSTRACT SYNTHESIS OF FUROPYRROLONE AND FUROPYRIDAZINONE DERIVATIVES: A NEW CLASS OF COMPOUNDS Karahan, Emrah M.Sc., Department of Chemistry Supervisor: Prof. Dr. Metin Balci February 2011, 102 pages Furopyrrolone has a bicyclic structure consisting of furan and a pyrrolone ring. It is isoelectronic with isoindolinone which is also a heterocyclic organic compound. It has a bicyclic structure, consisting of a benzene ring fused to a five-membered nitrogen containing pyrrolone ring. Pyrrolones, pyrrolidines, pyrrolidinones, pyridazines and pyridazinones are precursors to many pharmaceutic

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4

Lescouet, Tristan. "Conception et fonctionnalisation de MOFs pour le greffage et l'encapsulation de complexe organométallique." Phd thesis, Université Claude Bernard - Lyon I, 2012. http://tel.archives-ouvertes.fr/tel-00975367.

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Les Metal-Organic Frameworks résultent de l'organisation de clusters métalliques et demolécules organiques chélatantes qui forment un réseau cristallin poreux. Leur découverte apermis des avancées majeures dans le domaine du stockage et de la séparation des gaz.Malheureusement la faible stabilité et l'acidité modérée de ces matériaux ne les rendent quepeu compétitifs par rapport aux zéolites dans le domaine du raffinage ou de la dépollution. Ils'agit d'explorer, avec ces matériaux, de nouvelles applications catalytiques en tirant partie deleur principale qualité : leur modularité. En effet le

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5

Wang, Xiaojiang. "Polyester Based Hybrid Organic Coatings." University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1340906197.

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6

Eroglu, Gulden. "Isocyanate Functionalization Of Nano-boehmite For The Synthesis Of Polyurethane Organic-inorganic Hybrid Materials." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12612930/index.pdf.

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In this study, organic-inorganic hybrid materials were prepared from polyurethane and boehmite. It was achieved by polymerizing monomers in the presence of functional nano-particles of boehmite with cyanate groups. The produced polyurethane organic-inorganic hybrid materials with enhanced mechanical properties were used for coating applications. Plate-like boehmite nano-particles were produced by hydrothermal process from aluminum hydroxide which was first ground in a high energy ball-mill, and then, processed hydrothermally under pressure and high temperature in a reactor. The surface morphol

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7

Baumann, Delphine. "Synthèse d'inhibiteurs potentiels de glycosidases et d'urées cycliques de conformation restreinte." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2007. http://tel.archives-ouvertes.fr/tel-00718540.

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Nous avons réalisé la synthèse de nouvelles indolizidines polyhydroxylées, analogues de la swainsonine, inhibiteurs potentiels de glycosidases et d'urées cycliques de conformation restreinte portées par une pipéridine, agents permettant de contrôler la prolifération de cellules tumorales. Ces deux familles de composés ont été préparées à partir d'une pipéridine clé, obtenue par réaction de Mannich intramoléculaire entre le trans-4-oxo-buténoate d'éthyle et une bétâ-aminocétone protégée sous forme d'acétal. Dans un premier temps, nous avons synthétisé une indolizidine tri-hydroxylée en série ra

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8

Nobel, Dominique. "Coordinats fonctionnels en chimie des metaux de transition : synthese et reactivite, application a la telomerisation catalytique du butadiene et du dioxyde de carbone." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13109.

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9

Ergun, Merve. "Development Of New Synthetic Methodologies For Furan Fused Heterocycles." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615337/index.pdf.

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Furopyranones and furopyrrolones are furan-fused bicyclic heterocycles containing pyranone and pyrrolone framework respectively. Many natural products and pharmaceutical agents include these core structures. In this study, new synthetic methodologies were developed for the synthesis of furopyranone and furopyrrolone derivatives. In the first section of this thesis, methyl 2-(2-methoxy-2-oxoethyl)-3-furoate was hydrolyzed forming 2-(carboxymethyl)-3-furoic acid which underwent intramolecular cyclization reaction using two different methodologies forming furopyranone derivatives. In the second p

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10

Kilikli, Ahmet Alper. "Development Of New Synthetic Methodologies For Indole Derivatives: Chemistry Of Homophthalic Acid." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/3/12611521/index.pdf.

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Synthesizing nitrogen containing heterocyclic compounds is one of the leading research areas throughout the organic chemistry due to their significant activities on biological systems. Among the various biologically active molecules, indole derivatives are of prime importance on the grounds of their proven clinical roles. Objective of this study is to synthesize new indole derivatives those may contribute treatment of several diseases like their analogues via a recently developed synthetic methodology. Besides this, another objective is to observe and discuss effects of two different substitue

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11

Beji, Mohamed. "Heterocumulenes alpha -sulfonyles et leurs applications a la synthese de nouvelles structures heterocycliques : alkylation des esters sulfamiques en catalyse par transfert de phase." Paris 7, 1987. http://www.theses.fr/1987PA077183.

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12

Carrara, C. "SUPERPARAMAGNETIC IRON OXIDE NANOPARTICLES (SPIONS): DESIGN AND SYNTHESIS OF NEW NANOCONJUGATES." Doctoral thesis, Università degli Studi di Milano, 2013. http://hdl.handle.net/2434/214973.

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Superparamagnetic Iron Oxide Nanoparticles (SPIONs) have demonstrated great promise for diagnostic and therapeutic applications. Thanks to their magnetic properties and to their size, comparable to that of biologically objects, they are very useful for biomedical applications, such as, for example, automated DNA extraction, targeted gene delivery, magnetic resonance imaging (MRI), and magnetic field induced hyperthermia for cancer therapy.For these applications, SPIONs must be coupled with targeting agents, therapeutic drugs, and other functional probes. Hence, the need to develop efficient sy

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13

Trejo, O'Reilly José Antonio. "Synthèse d'agents de couplage, réactions de greffage en surface de fibres cellulosiques et propriétés d'interface fibres-matrices dans des matériaux composites à base de polystyrène." Grenoble INPG, 1997. http://www.theses.fr/1997INPG0019.

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L’objectif principal de ce travail est la modification chimique des fibres cellulosiques, afin d'améliorer leurs propriétés interfaciales lors de leur utilisation comme renforts dans des matériaux composites à matrice polymère organique (polystyrène). La synthèse d'un nouvel agent de couplage pour le système cellulose-polystyrène a été entreprise par la voie de copolymérisation cationique. Une caractérisation complète de cet agent de couplage a été faite par ftir, analyse élémentaire, #1h-nmr, calorimétrie différentielle (dsc) et chromatographie par exclusion stérique (ces). La réactivité de c

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14

Gerard, Eric-Jack. "Synthese, caracterisation et comportement de polyurethannes hydrophiles : etude du mecanisme de la polycondensation reticulante." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13192.

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Synthese d'hygrogels, constitues de chaines elastiques de polydioxolanne. Les reticulats sont synthetises en milieu organique par couplages multiples des extremites hydroxylees, du polydioxolanne precurseur avec un compose isocyanate plurifonctionnel. Apres reaction, un echange progressif du solvant organique par l'eau permet d'obtenir les hydrogels

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15

Maître, Anne. "Les peintures polyuréthanes en réparation automobile : développement de méthodes d'évaluation des niveaux d'exposition et approche de la toxicité humaine." Université Joseph Fourier (Grenoble), 1996. http://www.theses.fr/1996GRE10147.

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L'asthme aux isocyanates represente la premiere cause d'asthme chimique professionnel, et les peintres en reparation automobile constituent la population la plus exposee. Si la grande reactivite chimique des isocyanates explique leurs nombreuses applications industrielles, elle est egalement la cause de la diversite des mecanismes d'action toxique et de la meconnaissance des transformations metaboliques chez l'homme. La methode retenue pour evaluer les niveaux d'exposition atmospherique aux polyisocyanates est le barbotage de l'air dans une solution de methoxyphenylpiperazine, suivi d'une anal

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